CN106568845A - 3D visual representation method for flaw detection of hollow car axle - Google Patents
3D visual representation method for flaw detection of hollow car axle Download PDFInfo
- Publication number
- CN106568845A CN106568845A CN201610883568.1A CN201610883568A CN106568845A CN 106568845 A CN106568845 A CN 106568845A CN 201610883568 A CN201610883568 A CN 201610883568A CN 106568845 A CN106568845 A CN 106568845A
- Authority
- CN
- China
- Prior art keywords
- hole
- ultrasound probe
- dynamic
- dimensional
- flaw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/11—Analysing solids by measuring attenuation of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0654—Imaging
- G01N29/069—Defect imaging, localisation and sizing using, e.g. time of flight diffraction [TOFD], synthetic aperture focusing technique [SAFT], Amplituden-Laufzeit-Ortskurven [ALOK] technique
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to the field of ultrasonic flaw detection technology, especially to a 3D visual representation method for flaw detection of hollow car axle. By the utilization of animation for representation of the detection process, an ultrasonic probe inside a visual stereo hollow car axle can display the helical scanning process synchronously with a real flaw detection device. In addition, ultrasonic beam of the ultrasonic probe is modeled. Thus, the scanning process of the ultrasonic probe can be visually observed. When reflection of cracks detected by actual flaw detection is considered as abnormal, a three-dimensional diagram is used to be represented on the three-dimensional simulation diagram of the hollow car axle such that it is easier to judge the abnormality. By the method, the requirement on technical content of workers for operating equipment is reduced.
Description
Technical field
The present invention relates to ultrasonic examination technical field, especially a kind of flaw detection parsing for hollow axle flaw detector is aobvious
Show method.
Background technology
Hole-bored axle from end to end flaw detection adopts pulse reflection ultrasonic flaw-detecting machine, and typically in uniform material, defect is deposited
The discontinuous of material will be being caused, this discontinuously often to cause the inconsistent of acoustic impedance again, ultrasound wave is in two kinds of different acoustic resistances
Will reflect on the interface of anti-medium, the size of the energy for reflecting and the difference of interface both sides medium acoustic impedance
Different relevant with the orientation of interface, size, hole-bored axle from end to end flaw detection is exactly to design around this principle, hole-bored axle from end to end result of detection
Generally by A it is aobvious, show over the display in the way of B is aobvious or C is aobvious.
There is following defect in above-mentioned display method：1st, the aobvious representations of A are the reflection echos according to ultrasound probe feedback
Maximum carrys out the size of quantitative assessment crackle, but the quantitative assessment of the crackle place of hole-bored axle from end to end and crackle size is highly difficult,
Experienced person is needed to determine crackle size by the aobvious views of A；2nd, because the aobvious representations of B and the aobvious representations of C are respectively
Single picture, it is difficult to obtain the correspondence between the labelling represented by the labelling and the aobvious representations of C represented by the aobvious representations of B.It is special
Be not axletree adjacent corner existing defects in the case of, the waveform of the reflection echo from angle and the reflection echo from defect
It is close to or overlaps, thus be difficult to judge, thus it requires axletree visits the wounded with higher ability；3rd, represent by the way that C is aobvious
Method obtains crack signature to be needed to be contrasted with the position of actual axletree with the distance of axial end, and the time of cost is longer, crackle
The position of generation is difficult to judge.
The content of the invention
The purpose of the present invention is the defect for overcoming prior art to exist, there is provided a kind of hole-bored axle from end to end flaw detection of three-dimensional visualization
Three-dimensional visualization method for expressing.
In order to realize the purpose of the present invention, the technical scheme for being adopted is：
The hole-bored axle from end to end flaw detection three-dimensional visualization method for expressing of the present invention, is detected a flaw using pulse echo technique, is visited
The result of wound shows result of detection by control computer in the form of plane Dynamic Graph and Three-Dimensional Dynamic figure combine, described flat
Face Dynamic Graph includes hole-bored axle from end to end plane graph and ultrasound probe dynamic plane graph, the ultrasound probe dynamic plan representation
Go out the shift position of ultrasound probe, the hole-bored axle from end to end plan representation goes out splitting of detecting in ultrasound probe moving process
Stricture of vagina position, the Three-Dimensional Dynamic figure includes hole-bored axle from end to end three-dimensional modelling figure and ultrasound probe dynamic solid simulation drawing, described super
Sonic probe dynamic solid simulation drawing represents the shift position of the ultrasound probe, the sky in the form of Three-Dimensional Dynamic figure
Heart axletree three-dimensional modelling figure is represented the crack site that detects in ultrasound probe moving process in the form of graphics and is split
Stricture of vagina size.
The ultrasonic beam modelling that ultrasound probe in Three-Dimensional Dynamic figure of the present invention sends.
Pulse echo technique of the present invention is comprised the following steps：1) ultrasound probe is with spiral scanning hole-bored axle from end to end
Inside, and ultrasound probe is when moving in the axial direction, the reflection echo for receiving to feel sorrow for oneself, 2) ultrasound probe timing will be received
Reflection echo signal flaw detection processor is sent to by signal amplifier, 3) flaw detection processor analyzing and processing reflection echo is visited
Hinder processor and the result after process is sent to into control computer by a/d converter, control computer is with plane Dynamic Graph and three
The form that dimension Dynamic Graph combines shows result of detection.
The X-axis of plane Dynamic Graph of the present invention represents detected hole-bored axle from end to end axial length, by the plane Dynamic Graph
Draw the distance of distance and fragmented parts apart from axial end of distance axis end face in ultrasound probe moving process.
Control computer of the present invention is also shown with A sweep explicit representation, B-scan explicit representation and C-scan explicit representation and is detected a flaw
As a result.
The present invention hole-bored axle from end to end flaw detection three-dimensional visualization method for expressing beneficial effect be：The hole-bored axle from end to end of the present invention is visited
Hinder three-dimensional visualization method for expressing and show detection process using animation, so as to be located in the hole-bored axle from end to end of visual three-dimensional shape
Ultrasound probe can in a synchronous manner show helical scanning process with actual failure detector, in addition, ultrasound probe
Ultrasonic beam modelling, ultrasound probe scanning process can be intuitive to see.Also, detected when from actual flaw detection
The reflection of crackle when being considered as abnormal, represented on hole-bored axle from end to end three-dimensional modelling figure with graphics, anomalies are sentenced
Disconnected to be easier, the technology content of the workman of operation device requires to reduce.
Description of the drawings
With reference to the accompanying drawings and detailed description the present invention is further detailed explanation.
Fig. 1 is that the plane dynamic diagram of the hole-bored axle from end to end flaw detection three-dimensional visualization method for expressing of the present invention is intended to；
Fig. 2 is that the three-dimensional dynamic diagram of the hole-bored axle from end to end flaw detection three-dimensional visualization method for expressing of the present invention is intended to.
Wherein：Hole-bored axle from end to end plane diagram 1, ultrasound probe dynamic plane diagram 2, hole-bored axle from end to end three-dimensional modelling diagram 3,
Ultrasound probe dynamic solid simulated representation 4.
Specific embodiment
In describing the invention, it is to be understood that term " radial direction ", " axial direction ", " on ", D score, " top ", " bottom ",
The orientation or position relationship of the instructions such as " interior ", " outward " is, based on orientation shown in the drawings or position relationship, to be for only for ease of and retouch
State the present invention and simplify description, rather than indicate or imply that the device or element of indication must be with specific orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.In describing the invention, unless otherwise stated,
" multiple " are meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " set
Put ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art, can basis
Concrete condition understands above-mentioned term concrete meaning in the present invention.
Embodiment one：
As shown in Figure 1-2, the hole-bored axle from end to end flaw detection three-dimensional visualization method for expressing of the present embodiment is entered using pulse reflection method
Row flaw detection, comprises the following steps：
1. ultrasound probe with spiral scanning hole-bored axle from end to end inside, and ultrasound probe is when moving in the axial direction, receives
Come the reflection echo felt sorrow for oneself, the flaw detection time is generally 6 minutes per axle, and ultrasound probe rotary speed is 20rpm-50rpm, ultrasonic
Ripple probe translational speed is 2.5mm/s-100mm/s, and ultrasound probe scanning stride is 1mm-10mm, and stride can adjust, typically
Detect a flaw as 3mm, precise examination is 1mm；
2. the reflection echo for receiving is sent to flaw detection processor by ultrasound probe by signal amplifier, and flaw detection is processed
Routine processes reflection echo of the device according to write；
3. the result after process is sent to control computer by processor of detecting a flaw by a/d converter, and control computer is with flat
The form that face Dynamic Graph and Three-Dimensional Dynamic figure combine shows result of detection.
When the ultrasound wave that ultrasound probe sends is propagated in steel, its energy and acoustic pressure will be with propagation distance
Increase and decay, ultrasonic energy except because scattering cause decay in addition to, material grain size, internal flaw, chemical composition and tissue
Inhomogeneities and coupling condition etc. can also cause decay.
Typically in homogeneous material, the presence of crackle will cause material discontinuity, this discontinuously to bring acoustic impedance not
Unanimously, from reflection theorem, ultrasound wave can reflect on two kinds not interface of the medium of acoustic impedance, ultrasound probe
Receive the reflection echo from Axle crack and be sent to flaw detection processor, flaw detection processor is according to fundamental wave attenuation degree and wave amplitude
Shape, the various defects of axletree can be drawn, the two-dimensional diagram shape that processor of detecting a flaw in prior art is aobvious with A, B is aobvious and C is aobvious
Formula shows result of detection.Flaw detection personnel judge position, size, depth and shape of crackle etc. by waveform, typically there is crackle
Position waveform mutation, waveform is discontinuous, but the specific position of crackle, size, depth and shape need to have wide experience it is special
Industry personnel just can judge.
Result of detection is shown in the form of Dynamic Graph in the present embodiment, flaw detection processor is in flaw detection in real time by waveform number
According to control computer is sent to, Wave data is converted to plane Dynamic Graph and Three-Dimensional Dynamic figure by control computer, specifically, is put down
The three-dimensional representation that face Dynamic Graph and Three-Dimensional Dynamic figure combine is as follows：Plane Dynamic Graph includes that hole-bored axle from end to end plane illustrates 1 He
Ultrasound probe dynamic plane diagram 2, ultrasound probe dynamic plane diagram 2 represents the shift position of ultrasound probe, empty
Heart axletree plane diagram 1 represents the crack site detected in ultrasound probe moving process, and Three-Dimensional Dynamic figure includes hollow
Axletree three-dimensional modelling diagram 3 and ultrasound probe dynamic solid simulated representation 4, ultrasound probe dynamic solid simulated representation 4 with
The form of Three-Dimensional Dynamic figure represents the shift position of ultrasound probe, and hole-bored axle from end to end three-dimensional modelling diagram 3 is with the shape of graphics
Formula represents the crack site and crackle size detected in ultrasound probe moving process, and the ultrasound wave in Three-Dimensional Dynamic figure is visited
The ultrasonic beam modelling that hair goes out.
The X-axis of the plane Dynamic Graph in the present embodiment represents detected hole-bored axle from end to end axial length, by plane dynamic
Figure draws the distance of distance and fragmented parts apart from axial end of distance axis end face in ultrasound probe moving process.
In order to more accurately judge position and the size of crackle, control computer is also shown with A sweep explicit representation, B-scan
Method and C-scan explicit representation show result of detection, and showing with reference to A sweep explicit representation, B-scan explicit representation and C-scan explicit representation can be with
More accurately judge.
The hole-bored axle from end to end flaw detection three-dimensional visualization method for expressing of the present embodiment shows detection process using animation, so as to position
Ultrasound probe in the hole-bored axle from end to end of visual three-dimensional shape can in a synchronous manner show with actual failure detector
Show helical scanning process.And when the reflection of the crackle detected when from actual flaw detection is considered as abnormal, use graphics
Represent that the judgement to anomalies is easier, the technology content of the workman of operation device in hole-bored axle from end to end three-dimensional modelling diagram 3
Require to reduce.
It should be appreciated that specific embodiment described above is only used for explaining the present invention, it is not intended to limit the present invention.By
Among the obvious change extended out of spirit or variation of the present invention are still in protection scope of the present invention.
Claims (6)
1. a kind of hole-bored axle from end to end is detected a flaw three-dimensional visualization method for expressing, it is characterised in that：Visited using pulse echo technique
Wound, the result of flaw detection shows result of detection by control computer in the form of plane Dynamic Graph and Three-Dimensional Dynamic figure combine,
The plane Dynamic Graph includes that hole-bored axle from end to end plane illustrates (1) and ultrasound probe dynamic plane diagram (2), and the ultrasound wave is visited
Dynamic plane diagram (2) of head represents the shift position of ultrasound probe, and hole-bored axle from end to end plane diagram (1) represents ultrasound
The crack site that detects in ripple probe moving process, the Three-Dimensional Dynamic figure include hole-bored axle from end to end three-dimensional modelling illustrate (3) and
Ultrasound probe dynamic solid simulated representation (4), the ultrasound probe dynamic solid simulated representation (4) is with Three-Dimensional Dynamic figure
Form represents the shift position of the ultrasound probe, and hole-bored axle from end to end three-dimensional modelling diagram (3) is in the form of graphics
Represent the crack site and crackle size detected in ultrasound probe moving process.
2. hole-bored axle from end to end according to claim 1 is detected a flaw three-dimensional visualization method for expressing, it is characterised in that：It is described three-dimensional dynamic
The ultrasonic beam modelling that ultrasound probe in state figure sends.
3. hole-bored axle from end to end according to claim 2 is detected a flaw three-dimensional visualization method for expressing, it is characterised in that：The pulse is anti-
Penetrate defectoscopy to comprise the following steps：A. ultrasound probe with spiral scanning hole-bored axle from end to end inside, and ultrasound probe is in axial direction
When upper mobile, the reflection echo for receiving to feel sorrow for oneself；The reflection echo signal for receiving is passed through signal by b. ultrasound probe timing
Amplifier is sent to flaw detection processor, flaw detection processor analyzing and processing reflection echo；C. processor is detected a flaw by the result after process
Control computer is sent to by a/d converter, control computer shows in the form of plane Dynamic Graph and Three-Dimensional Dynamic figure combine
Show result of detection.
4. hole-bored axle from end to end according to claim 3 is detected a flaw three-dimensional visualization method for expressing, it is characterised in that：At the flaw detection
Reason utensil has special carrying out flaw detection software.
5. hole-bored axle from end to end according to claim 4 is detected a flaw three-dimensional visualization method for expressing, it is characterised in that：The plane is moved
The X-axis of state figure represents detected hole-bored axle from end to end axial length, is drawn in ultrasound probe moving process by the plane Dynamic Graph
Apart from axial end distance and fragmented parts apart from axial end distance.
6. hole-bored axle from end to end according to claim 5 is detected a flaw three-dimensional visualization method for expressing, it is characterised in that：The control meter
Calculation machine also shows result of detection with A sweep explicit representation, B-scan explicit representation and C-scan explicit representation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610883568.1A CN106568845A (en) | 2016-10-10 | 2016-10-10 | 3D visual representation method for flaw detection of hollow car axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610883568.1A CN106568845A (en) | 2016-10-10 | 2016-10-10 | 3D visual representation method for flaw detection of hollow car axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106568845A true CN106568845A (en) | 2017-04-19 |
Family
ID=58531836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610883568.1A Pending CN106568845A (en) | 2016-10-10 | 2016-10-10 | 3D visual representation method for flaw detection of hollow car axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106568845A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858482A (en) * | 2021-01-14 | 2021-05-28 | 北京主导时代科技有限公司 | Automatic ultrasonic wound judging method and system for hollow shaft |
| CN113588786A (en) * | 2021-07-21 | 2021-11-02 | 国能新朔铁路有限责任公司 | Steel rail flaw detection system, display method and device and computer equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030131674A1 (en) * | 2001-11-08 | 2003-07-17 | Foley Alfred Denis | Pole testing system |
| WO2005045598A2 (en) * | 2003-10-04 | 2005-05-19 | Usut Labs, Inc. | Method and apparatus for inspecting parts with high frequency linear array |
| CN101470102A (en) * | 2007-12-18 | 2009-07-01 | 通用电气公司 | System and method for augmented reality inspection and data visualization |
| CN103969336A (en) * | 2014-04-28 | 2014-08-06 | 南车青岛四方机车车辆股份有限公司 | Automatic detecting and imaging method of hyper-acoustic phased array of weld joint in complex space |
| CN103969335A (en) * | 2013-06-27 | 2014-08-06 | 南车青岛四方机车车辆股份有限公司 | Automatic ultrasonic imaging and visualization method for welding-seam sidewall incomplete fusion |
| CN104865312A (en) * | 2015-04-23 | 2015-08-26 | 南京航空航天大学 | Multiple unit train hollow shaft ultrasonic detection system and detection method |
-
2016
- 2016-10-10 CN CN201610883568.1A patent/CN106568845A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030131674A1 (en) * | 2001-11-08 | 2003-07-17 | Foley Alfred Denis | Pole testing system |
| WO2005045598A2 (en) * | 2003-10-04 | 2005-05-19 | Usut Labs, Inc. | Method and apparatus for inspecting parts with high frequency linear array |
| CN101470102A (en) * | 2007-12-18 | 2009-07-01 | 通用电气公司 | System and method for augmented reality inspection and data visualization |
| CN103969335A (en) * | 2013-06-27 | 2014-08-06 | 南车青岛四方机车车辆股份有限公司 | Automatic ultrasonic imaging and visualization method for welding-seam sidewall incomplete fusion |
| CN103969336A (en) * | 2014-04-28 | 2014-08-06 | 南车青岛四方机车车辆股份有限公司 | Automatic detecting and imaging method of hyper-acoustic phased array of weld joint in complex space |
| CN104865312A (en) * | 2015-04-23 | 2015-08-26 | 南京航空航天大学 | Multiple unit train hollow shaft ultrasonic detection system and detection method |
Non-Patent Citations (2)
| Title |
|---|
| 周正干 等: "矩阵换能器超声三维成像方法研究", 《仪器仪表学报》 * |
| 潘亮 等: "相控阵超声检测技术研究与应用概况", 《无损检测》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858482A (en) * | 2021-01-14 | 2021-05-28 | 北京主导时代科技有限公司 | Automatic ultrasonic wound judging method and system for hollow shaft |
| CN112858482B (en) * | 2021-01-14 | 2023-10-24 | 北京主导时代科技有限公司 | Ultrasonic automatic damage judging method and ultrasonic automatic damage judging system for hollow shaft |
| CN113588786A (en) * | 2021-07-21 | 2021-11-02 | 国能新朔铁路有限责任公司 | Steel rail flaw detection system, display method and device and computer equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Calmon et al. | CIVA: An expertise platform for simulation and processing NDT data | |
| EP2948766B1 (en) | Transforming a-scan data samples into a three-dimensional space for facilitating visualization of flaws | |
| EP2554986A1 (en) | Methods and apparatus for porosity measurement and defect detection | |
| US10473626B2 (en) | Method for the graphical representation and data presentation of weld inspection results | |
| US20100199770A1 (en) | Method for the nondestructive recording of a rotational movement of a specimen, device therefor as well as probe unit | |
| Darmon et al. | Modelling of scattering of ultrasounds by flaws for NDT | |
| Ma et al. | The reflection of guided waves from simple dents in pipes | |
| Long et al. | Prediction of guided wave scattering by defects in rails using numerical modelling | |
| Shivaraj et al. | Ultrasonic circumferential guided wave for pitting-type corrosion imaging at inaccessible pipe-support locations | |
| Jin et al. | Quantitative detection of shallow subsurface cracks in pipeline with time-of-flight diffraction technique | |
| Zou et al. | Highly accurate online characterisation of cracks in plate-like structures | |
| CN106568845A (en) | 3D visual representation method for flaw detection of hollow car axle | |
| Hu et al. | Numerical and experimental investigations on mode conversion of guided waves in partially immersed plates | |
| Rodriguez et al. | Ultrasonic imaging of buried defects in rails | |
| JP6552946B2 (en) | Ultrasonic inspection method and apparatus | |
| CN201965117U (en) | Remote pipe imaging system based on guided wave focused scanning | |
| Das et al. | Elastic wave scattering in a solid half-space with a circular cylindrical hole using the Distributed Point Source Method | |
| Darmon et al. | Simulation of disoriented flaws in a TOFD technique configuration using GTD approach | |
| Klieber et al. | Mapping of ultrasonic Lamb-wave field in elastic layered structures using laser probes | |
| Chen et al. | Investigation of pipelines defect localization for fusion reactor by using T (0, 1) mode ultrasonic guided waves | |
| Schmitz et al. | Calculation of high frequency ultrasonic signals for shear wave insonification in solid material | |
| Cinquin et al. | Results of 2006 UT Modeling Benchmark Obtained with CIVA at CEA: Beam Modeling and Flaw Signal Prediction | |
| KR101729570B1 (en) | Projected Area Setting Method Using Gate Bars And Phased Array Ultrasonic Testing Device And Testing Method Using Thereof | |
| Aldrin et al. | Spiral Creeping Waves in Ultrasonic Angled‐Beam Shear Wave Inspection of Fastener Holes in Multilayer Structures | |
| Revel et al. | Quantitative validation of an air-coupled ultrasonic probe model by Interferometric laser tomography |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170419 |
|
| RJ01 | Rejection of invention patent application after publication |